Short version: Is there an end-to-end sample that shows how to register a Xamarin client with Azure Notification Hub using their Mobile SDK and the new Installation Model?
Long version:
The docs on Azure mention the support to register client devices using the Installation Model.
I'm using Xamarin Forms and this looks like the way to go, but I don't see any related code in Microsoft's Mobile Client Packages. The closest thing I found was that article that recommends using a Xamarin "Google Cloud Messaging Client" component for registrations, but that seems to be a 3rd party library that seems to have been around for years and hasn't been touched in months.
Edit: I discovered way too many outdated, broken or conflicting tutorials on both the Microsoft and Xamarin sites, so I listed them and asked for guidance on the Xamarin Forms forum. I'll keep this thread synced.